An amusement park ride consists of a car which is attached to the cable OA. The car rotates in a horizontal circular path and is brought to a speed of 3 ft/s when r-17 ft. The cable is then pulled in at the constant rate of 1 ft/s. Determine the speed of the car in 2.5 s.

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Q: The slider P can be moved inward by means of the string S, while the slotted arm rotates about point…

A: Write the given data. θ=0.84t-0.056t2r=1.42 at t=0r˙=-0.15 m/s

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.